Set up project skeleton (milestone 1)

- Architecture and feature overview in docs/ARCHITECTURE.md
- Gradle 9.8 / AGP 9.4 / Kotlin 2.4 with version catalog and convention plugins
- Modules :app, :core:*, :device-profiles, :feature:* (placeholder screens)
- Flavors core (no INTERNET, enforced by a build check) and full
- Material You theme, navigation, expert mode and dry-run settings (DataStore)
- Pixel 8-10 device detection, unit tests, GPLv3 license, English README with Obtainium badge

Co-Authored-By: Claude Opus 5.5 <[email protected]>

feature/profiles/src/main/kotlin/org/pixelwall/feature/profiles/ProfilesNavigation.kt

@@ -0,0 +1,17 @@
+package org.pixelwall.feature.profiles
+
+import androidx.compose.ui.res.stringResource
+import androidx.navigation.NavGraphBuilder
+import androidx.navigation.compose.composable
+import org.pixelwall.core.ui.component.PlaceholderScreen
+
+const val PROFILES_ROUTE = "profiles"
+
+fun NavGraphBuilder.profilesScreen() {
+    composable(PROFILES_ROUTE) {
+        PlaceholderScreen(
+            title = stringResource(R.string.profiles_title),
+            description = stringResource(R.string.profiles_description),
+        )
+    }
+}

feature/profiles/src/main/res/values-de/strings.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="profiles_title">Profile</string>
+    <string name="profiles_description">Vordefinierte und eigene Profile, Regeln und Automatisierung.</string>
+</resources>

feature/profiles/src/main/res/values/strings.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="profiles_title">Profiles</string>
+    <string name="profiles_description">Predefined and custom profiles, rules and automation.</string>
+</resources>